I live in the South east ,so havent had many opportunities to run big stuff,my 27 in saluki x has taken a couple of the smaller fellas,preban ,was travelling through Suffolk the other week,early morning ,on our way to do a bit,saw a Red stag in a field he was all most black with the mist on him,he looked huge,I know a guy who has taken them with a 29in bullx who weighs 100lbs,he was an agile dog for his size and a big mean sod,its not a subject I have any knowledge of ,unlike some guys on here,just like to say any dog capable ,and inclined to take an animal as big as that stag I saw is the rea